Question

A net force of 4.5N acts on a 2.0kg motorized toy racecar drives in a circle of radius 4.0m at a constant speed of 1.5m/s. A net force of 4.5N acts on the object. Identify the angular momentum of the racecar with respect to an axis perpendicular to the road and through the circle center.

A. 18Kg•m2/s

B. 12Kg•m2/s

C. 13.5Kg•m2/s

D. 24Kg•m2/s

E. 9Kg•m2/s

Answer 1

solution: aug ma 2 V I 1.5 m/s rzum - now, momen centum Þ Angular Хр linear momentum = mv b = 2x1.5 = 3 kg.ms A X he so Angular momentum = Angular momentum 1811 Fisingoo Angular 4 x 3 Singoo Angular momentum = 12 kg. m2/s montum Hence, option (B) is correct